The factory function takes a command name, and looks it up using
Tcl’s CommandInfo function. Note that this type doesn’t provide any
additional methods; at this time, it’s main purpose is to provide
information for the bound method type.

PyTclBoundMethodObject

This is a callable type which combines a PyTclCommandObject with
a method name (as a PyTclObject string) and information on how to
convert arguments and results.